CN100549441C - Connection set between bar that is used for reciprocator and crosshead - Google Patents
Connection set between bar that is used for reciprocator and crosshead Download PDFInfo
- Publication number
- CN100549441C CN100549441C CNB200510125481XA CN200510125481A CN100549441C CN 100549441 C CN100549441 C CN 100549441C CN B200510125481X A CNB200510125481X A CN B200510125481XA CN 200510125481 A CN200510125481 A CN 200510125481A CN 100549441 C CN100549441 C CN 100549441C
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- China
- Prior art keywords
- bar
- crosshead
- connection set
- flange
- centre
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
- F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
- F01B9/026—Rigid connections between piston and rod; Oscillating pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C5/00—Crossheads; Constructions of connecting-rod heads or piston-rod connections rigid with crossheads
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressor (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
At the connection set (10) that is used between bar of reciprocator (20) and the crosshead (30), comprise by fixing device (37) and be fixed to flange (35) on the crosshead (30), bar is connected to the piston (70) that slides in the cylinder (60) at reciprocator, flange (35) comprises and is used to be inserted through the axial hole (38) that clamping system (50) is fixed to the bar (20) on the flange (35), connection set (10) comprises a series of locating studs (40) that are in the off-centre between flange (35) and the crosshead (30), to make bar (20) and cylinder (60) coaxial fully and for good and all.This advantageously makes be maximized the service life of the sealing system (90) that combines with cylinder (60) and come in contact with bar (20).
Description
Technical field
The present invention relates to be used for reciprocator especially for the bar of reciprocal compressor and the connection set between the crosshead.
Background technique
Be connected in the reciprocal compressor of relevant piston with corresponding bar by crosshead at connecting rod, the connection set between bar and crosshead is vital factor for reliability, service life and the performance of reciprocator.
Especially, connection set influence is between cylinder and the described bar to prevent the reliability and the service life of the sealing system that gas flows to connection set from cylinder, and described piston slides in this cylinder.
Described sealing system comprise that a series of and cylinder combine and also with carry out the element that is easy to wear and tear that bar in axial sliding comes in contact with respect to cylinder, this bar is attached to piston.
Described a series of elements of described sealing system have the service life based on the stress phase that they are subjected at the reciprocator run duration.
In fact, because by the frictional force that dynamic stress caused, described a series of elements of described sealing system normally are easy to wear and tear, and this dynamic stress is caused by the cyclic loading feature of the operation of reciprocator.
First and foremost, particularly take place under the situation of axial displacement with respect to fixing part at bar with respect to cylinder, the frictional force of the element of sealing system and consequent wearing and tearing are showed especially, and the described piston that is connected to described bar in this cylinder slides.
Therefore, when when them no longer being the necessity that needs for the effective operation that guarantees reciprocator, they are replaced because wearing and tearing, the element of sealing system need housekeeping operation and control regularly.
In order to overcome this shortcoming, therefore connection set must be guaranteed correctly bar to be carried out centralized positioning with respect to cylinder, to reduce the wearing and tearing to the element that is easy to wear and tear of sealing system as much as possible.
In order to be maximized service life of the member that is easy to wear and tear of the sealing system that is used in the gas that in cylinder, produces, when when reciprocal compressor being carried out the alignment error occurs when some benchmark are adjusted, the alignment error is maintained in is lower than predetermined maximum value, this is and is important.
When crosshead was connected to bar by connection set, in order to make bar and cylinder coaxial, enforcement can be corrected the centralized positioning operation of alignment error, and this is necessary.
First shortcoming is that these operate in the fabrication stage and during housekeeping operation of member being dismantled and being assembled at every turn or control operation and are implemented.
The both direction that relative to each other meets at right angles with the rectangular horizontal plane of the axis of bar or crosshead on, measure by deviation, determine the value of described alignment error or displacement.
Term " deviation " refers to the variation by the measured value that is combined by fixing part (cylinder) during special trend is slided along it at bar and obtain with comparator that bar comes in contact.
Like this, just define vertical movement and the horizontal move that to correct in order to obtain the alignment between bar, movable part and cylinder, fixing part.
When each element that is in the connection set between described bar and the described cylinder has the operation difference, just between bar and cylinder, produced little alignment error.
Therefore, carry out the algebraically summation, provided total vertical movement and horizontal move between bar and cylinder by all vertical movements and the horizontal move to the element that connected bar and crosshead respectively.
Another consequent shortcoming is that for the reciprocator of large scale, the manufacturing difference of single member can cause consequent horizontal departure and the vertical missing that has surpassed the limit that sets of alignment sum of errors.
Summary of the invention
The purpose of this invention is to provide at the bar of for example reciprocator as the reciprocal compressor and the connection set between the crosshead, this connection set has been avoided in order to make their coaxial and heavy centralized positioning operation and alignment functions that carry out during they being safeguarded or reciprocator safeguarded.
Another purpose provides the service life of the member that making between the bar of reciprocator and crosshead be easy to wear and tear and the connection set that reliability is improved.
Another purpose provides being used between the bar of reciprocator and crosshead and replaces the maintenance time of the element be easy to wear and tear and the connection set that maintenance cost is reduced.
Another purpose provides making the simple connection set of the centralized positioning of member at the run duration of compressor own with during it is carried out housekeeping operation between the bar of reciprocator and the crosshead.
Another purpose provides the simple and reliable connection set between the bar of reciprocator and crosshead.
As illustrated in claim 1, bar by being provided at reciprocator and the connection set between the crosshead have realized that these are according to purpose of the present invention.
Further feature of the present invention has been described in the dependent claims.
Description of drawings
Illustrative and nonrestrictive description by next carrying out with reference to schematic accompanying drawing seem clearer and more definite according to of the present invention at the bar of reciprocal compressor and the feature and advantage of the connection set between the crosshead, and accompanying drawing is as follows:
Fig. 1 is being used for the left side view of reciprocator especially for the decomposition of the projection of the preferred embodiment of the bar of reciprocal compressor and the connection set between the crosshead according to of the present invention;
Fig. 2 is the left side view of perspective of projection of the details of Fig. 1;
Fig. 3 is the left side view of perspective of projection of broken section that has shown the connection set of Fig. 1;
Fig. 4 be shown sealing system reciprocator details analyse and observe view.
Embodiment
With reference to the accompanying drawings, these accompanying drawings have shown and are being used for reciprocator especially for the bar 20 of reciprocal compressor and the connection set 10 between the crosshead 30 that described connection set 10 comprises flange 35.
Described bar 20 preferably is connected to the piston 70 that slides shown in Figure 4 in the cylinder 60 of reciprocator, described crosshead 30 then is connected to connecting rod by pin 32.
Described flange 35 has the preferably axial through hole 38 in the central position, and preferably passes through for example as the fixing device of a series of connecting rods 37, and described flange 35 also is fixed to the described crosshead 30 that is equipped with slip bar 33.
Described connection set 10 comprises a series of locating studs 40 that are in the off-centre between described crosshead 30 and the described flange 35, preferably two, so that described crosshead 30 and to have inserted the described through hole 38 in the central position of described flange 35 of described bar 20 therein coaxial, that is, make in the admissible margin of error of the alignment error between described crosshead 30 and the described bar 20 at defined.
Like this, just make the axial displacement or the axial off-centre that in the limit of being scheduled to, are corrected between described bar 20 and the described cylinder 60 become possibility.
The wearing and tearing that make sealing system 90 that are intended that of this correction are reduced and are maximized service life, thereby the maintenance that reduces reciprocator gets involved.
Each eccentric locating stud 40 all comprises the first columniform part 41 and the second columniform part 42, these two-part be combine each other and be eccentric each other, be that the described first columniform part 41 has axis 45 and the described second columniform part 42 has corresponding axis 44, between described axis 45 and described axis 44, have predetermined off-centre.
The described first columniform part 41 and the described second columniform part 42 have predetermined off-centre each other, and these two-part be positioned at respectively be in accordingly in the described crosshead 30 and be in the shell in the described flange 35.
Described crosshead 30 preferably has the shell 31 that a series of numbers equate with the pin 40 of a series of off-centre, and each shell 31 all has the bottom that has the screwed hole of the pin 40 that is used for fixing corresponding off-centre therein.
Described flange (35) preferably has a series of numbers shell (34) consistent with the pin (40) of a series of off-centre.
Selectively, the corresponding screwed hole that is used for fixing the pin 40 of a series of off-centre can be in the shell 34 of described flange 35, rather than is in the shell 31 of described crosshead 30.
By the pin 40 of a series of off-centre, make described crosshead 30 and therefore in the fabrication stage, make it and the described flange 35 coaxial possibilities that become.
In case the pin 40 of described off-centre correctly has been positioned in the shell 31 of described crosshead 30, so just making preferably by a series of screws 47 pin 40 of described off-centre to be fixed on the described crosshead 30 becomes possibility.
The pin 40 of each off-centre all preferably includes reference element 46, is used for helping positioning in corresponding shell 31.
The pin 40 of each off-centre all preferably includes the axial hole 43 coaxial with the described first columniform part 41, is used to insert corresponding set screw 47.
Like this, even when described crosshead 30 and described flange 35 are dismantled and are re-assemblied, between described crosshead 30 and the described flange 35 particularly between the described through hole 38 at described crosshead 30 and described flange 35, also always there are alignment and correct positioning completely in the central position.
In order to make described flange 35 and described crosshead 30 coaxial and during carrying out housekeeping operation, described flange 35 is linked together with a series of pins 40 that are fixed to the off-centre on the described crosshead 30, this is favourable enough.In addition, thus described connection set 10 preferably includes centralized positioning and is fixed on described flange 35 the described coaxial ring 36 in itself and hole 38 that on the through hole 38 of central position, makes.
Described ring 36 has been equipped with the interior section 39 of frustroconical, and this interior section 39 links with the part 22 of the frustroconical of corresponding described bar 20 and engages.
Being intended that of this binding and joint makes described bar 20 coaxial with the described through hole 38 in the central position of described flange 35, and the pin 40 by described a series of off-centre makes this flange 35 coaxial with described crosshead 30 again.
Described bar 20 is inserted in the described ring 36 and also is inserted in the described in the through hole 38 of central position of described flange 35.
And described bar 20 is preferably strained in advance by clamping system 50, is clipped on the flange 35 then.
Described clamping system 50 comprise the annular that is used to install to the described bar on the bearing 52 linking portion 51, with the linking portion 53 and the retaining ring nut 54 of the annular of described flange engages.
On basis of the present invention,, be enough so in fact in the limit of being scheduled to, bar 20 is re-assemblied and retightens by regulation because ring 36 is obtained the alignment completely between bar and crosshead with a series of locating studs 40.
Like this, to the assembly operation of bar and crosshead 30 and disassembling section with therefore its housekeeping operation and control operation have just greatly been simplified, maintenance and regulate expenditure and time have also just been reduced.
By above description, clear and definite is, in fabrication stage with consequential centralized positioning stage by a series of pins 40, crosshead 30 is fixed to after the flange 35, connection set 10 of the present invention has carried out egocentric localization and has allowed carrying out correct positioning between bar 20 and crosshead 30, and this has also been avoided taking place the loss of alignment after carrying out disassembling section.
Therefore, the present invention has avoided carrying out difficulty and the heavy centralized positioning operation and the necessity of alignment function between bar and crosshead after carrying out housekeeping operation and/or disassembling section.
Like this, reciprocal compressor is particularly just maximized the service life of the member that is easy to wear and tear of sealing system, and this also makes the reliability of reciprocator be improved significantly.
Therefore this also make the number of times that the maintenance of carrying out got involved in order to replace the member that is easy to wear and tear be reduced, and this also further makes expense be saved.
Therefore, what can see is, connection set between bar that is used for reciprocal compressor and crosshead according to the present invention has been realized illustrated intention in the above, and allow particularly with respect to cylinder the horizontal departure and the vertical missing of bar to be corrected with respect to the fixing part of reciprocator, the piston that itself is connected to bar in this cylinder slides.
This advantageously makes be maximized the service life of the sealing system that combines with cylinder and come in contact with bar.
So the connection set between bar that is used for reciprocal compressor and crosshead of the present invention of design can have many modification and variant, and all modification are with in variant all is included in the design of identical invention.
In addition, when implementing, according to technical needs, employed material and yardstick thereof and member can change.
Claims (8)
1. at the connection set (10) that is used between bar of reciprocator (20) and the crosshead (30), it comprises by fixing device (37) and is fixed to flange (35) on the described crosshead (30), described bar is connected to the piston (70) that slides in the cylinder (60) at described reciprocator, described flange (35) comprises the axial hole (38) that is used to insert described bar (20), described bar is fixed on the described flange (35) by clamping system (50), it is characterized in that, it comprises a series of locating studs (40) that are in the off-centre between described flange (35) and the described crosshead (30), fully and for good and all to make described bar (20) and described cylinder (60) coaxial.
2. connection set according to claim 1 (10), it is characterized in that the pin of each off-centre (40) all comprises and combining each other and in the first columniform part (41) that also has predetermined off-centre each other and the second columniform part (42).
3. connection set according to claim 2 (10), it is characterized in that the described first columniform part (41) of the pin of each off-centre (40) and the described second columniform part (42) are positioned in the corresponding shell (31,34) that is in respectively in described crosshead (30) and the described flange (35).
4. connection set according to claim 3 (10) is characterized in that, the described shell (31) of described crosshead (30) comprises the bottom, and this bottom has comprised the threaded hole of the pin (40) that is used for fixing corresponding off-centre.
5. according to any one the described connection set (10) in the claim 2 to 4, it is characterized in that, the pin of each off-centre (40) all comprises the axial hole (43) coaxial with the described first columniform part (41), is used to insert corresponding set screw (47).
6. according to any one the described connection set (10) in the claim 1 to 4, it is characterized in that, described connection set (10) comprises the ring (36) on the described axial hole (38) that is fixed on described flange (35), described ring (36) has been equipped with the shell (39) of interior conical, this shell (39) links with the corresponding conical part (22) of described bar (20), is used to make the described hole of described bar (20) and described flange (35) coaxial.
7. according to any one the described connection set (10) in the claim 1 to 4, it is characterized in that the pin of each off-centre (40) all comprises reference element (46).
8. connection set according to claim 7 (10) is characterized in that, described reference element (46) is on the lower surface of the described second columniform part (42).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2004A002204 | 2004-11-17 | ||
| ITMI20042204 ITMI20042204A1 (en) | 2004-11-17 | 2004-11-17 | MEANS OF CONNECTION BETWEEN THE AUCTION AND THE CROSS HEAD FOR AN ALTERNATIVE MACHINE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1776240A CN1776240A (en) | 2006-05-24 |
| CN100549441C true CN100549441C (en) | 2009-10-14 |
Family
ID=35789089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510125481XA Active CN100549441C (en) | 2004-11-17 | 2005-11-17 | Connection set between bar that is used for reciprocator and crosshead |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1659302B1 (en) |
| JP (1) | JP2006145031A (en) |
| CN (1) | CN100549441C (en) |
| DE (1) | DE602005005136T2 (en) |
| IT (1) | ITMI20042204A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100322802A1 (en) * | 2009-06-23 | 2010-12-23 | Weir Spm, Inc. | Readily Removable Pump Crosshead |
| JP5379115B2 (en) * | 2010-12-13 | 2013-12-25 | 株式会社神戸製鋼所 | Reciprocating compressor |
| CN104421321A (en) * | 2013-08-28 | 2015-03-18 | 陕西汉德车桥有限公司 | Split type differential universal joint |
| ITCO20130055A1 (en) * | 2013-10-29 | 2015-04-30 | Nuovo Pignone Srl | ASSEMBLY TESTACROCE-PISTON ROD FOR ALTERNATIVE COMPRESSOR |
| CN104929908A (en) * | 2015-05-10 | 2015-09-23 | 湖南宜化化工有限责任公司 | Connecting structure and connecting method of piston rod crosshead |
| DE102016102649A1 (en) * | 2016-02-16 | 2017-08-17 | Devetec Gmbh | Cylinder assembly of an ORC engine |
| FR3058766B1 (en) | 2016-11-16 | 2018-12-14 | Atlas Copco Crepelle S.A.S. | ALTERNATIVE COMPRESSOR |
| CN107165817B (en) * | 2017-07-04 | 2018-10-09 | 盐城市东荣石油机械有限公司 | A kind of mud piston |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB327150A (en) * | 1900-01-01 | |||
| FR709490A (en) * | 1930-04-19 | 1931-08-07 | Maschb Ag Vormals Ehrhardt & S | Piston rod coupling for very high pressure compressors |
| US1835662A (en) * | 1931-02-12 | 1931-12-08 | Ingersoll Rand Co | Floating plunger |
| JPS6252316U (en) * | 1985-09-21 | 1987-04-01 | ||
| IT1229654B (en) * | 1989-04-21 | 1991-09-06 | Nuovo Pignone Spa | CROSS HEAD PERFECTED FOR ALTERNATIVE PISTON MACHINES, IN PARTICULAR FOR ALTERNATIVE COMPRESSORS. |
| ATE104018T1 (en) * | 1989-12-21 | 1994-04-15 | Burckhardt Ag Maschf | HORIZONTAL DESIGN PISTON COMPRESSOR. |
| JPH0665890B2 (en) * | 1990-10-15 | 1994-08-24 | 共立精機株式会社 | Precision machine bearing device |
| DE29800522U1 (en) * | 1998-01-14 | 1998-03-26 | Neuman & Esser Maschinenfabrik GmbH & Co. KG, 52531 Übach-Palenberg | Piston compressor |
| JP4131044B2 (en) * | 1998-08-06 | 2008-08-13 | 株式会社豊田自動織機 | Forklift tilt cylinder coupling device |
| DE10048701C1 (en) * | 2000-09-30 | 2002-06-13 | Neuman & Esser Maschf | Piston compressor with at least one piston-cylinder unit has adjustable piston rod |
| ITMI20011757A1 (en) * | 2001-08-09 | 2003-02-09 | Nuovo Pignone Spa | MEANS OF CONNECTION BETWEEN ROD AND CROSS HEAD IN AN ALTERNATIVE COMPRESSOR |
-
2004
- 2004-11-17 IT ITMI20042204 patent/ITMI20042204A1/en unknown
-
2005
- 2005-11-04 JP JP2005320296A patent/JP2006145031A/en active Pending
- 2005-11-14 EP EP20050257016 patent/EP1659302B1/en active Active
- 2005-11-14 DE DE200560005136 patent/DE602005005136T2/en active Active
- 2005-11-17 CN CNB200510125481XA patent/CN100549441C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE602005005136T2 (en) | 2009-02-26 |
| EP1659302B1 (en) | 2008-03-05 |
| ITMI20042204A1 (en) | 2005-02-17 |
| JP2006145031A (en) | 2006-06-08 |
| CN1776240A (en) | 2006-05-24 |
| DE602005005136D1 (en) | 2008-04-17 |
| EP1659302A1 (en) | 2006-05-24 |
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Effective date of registration: 20220316 Address after: Italy, Florence Patentee after: NUOVO PIGNONE TECNOLOGIE S.R.L. Address before: Italy, Florence Patentee before: NUOVO PIGNONE S.R.L. Effective date of registration: 20220316 Address after: Italy, Florence Patentee after: NUOVO PIGNONE S.R.L. Address before: Italy, Florence Patentee before: NUOVO PIGNONE S.P.A. |